While experimenting with the new gui skins, i noticed that something is not right when using GUI in fullscreen mode.

Try The tutorial Gui->Buttons. It works fine as it is, but not when you add D.full(true) in init. you will see that the coordinates on which the button highlight activates is a bit to the left and a bit too low. Also the text seems a bit blurry in full screen.

I think this is new since the big update. I never noticed something like that before.

Edit: The editor itself works fine in fullscreen mode. So it's not fullscreen as such that causes it. But the tutorial goes wrong over here. Even the clickable area for the button is off.

Edit 2: I found the problem. I have 3 monitors. The third one has a lower resolution (1600 x 900) and if I disconnect it, everything works like it should. I don't recall this was ever a problem before though. But at least it's not an esenthel problem